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They were a decent medium weight of plastic. I had hoped for something a bit heavier. Need to be careful screwing them down because cracking at the screws would probebly not be too difficult. They do work very well though as replacements for old or damaged parts.

Misfire on bank 1 in chevy venture 1998, replaced spark plugs and ignition wires, cleared code, drove and code came back on = misfire bank one, KNOW B4 Changing is firing order and which coil pack is number for misfire, next part to replace to fix misfire could be coil pack or ignition module, Tool for easier replacement is Thexton 419X sold at advanceautoparts .com AUG 2013 Chock both rear wheels forward and aft, place transmission in neutral, MOTOR NEVER ON, remove one motor mount between engine and top of radiator, place V rocker tool onto where bolts held mount in place, remove 2nd motor mount, use V-tool to rock engine top forward enable better reach to coil packs and even the ignition module, Remove two wires from coil pack you are replacing Remember L and R, deep well socket and 1/4 drive ratchet, remove two small headed bolts. lift up coil pack, remove oval rubber seal, place new seal into setting, place new coil pack on, bolt it down, place L and R wires back on, rock engine back, place 2nd motor mount back on, remove V-engine rocker, Place 1st motor mount back on, transmission back into park, remove wheel chocks, clear code, dive to see if code comes back on, If is does come back on misfire could be bad ignition module, do steps again and remove all coil packs, remove ignition module, replace ignition module, reinstall coil packs, spark wires, motor mounts, engine into park, remove wheel chocks, clear codes, drive to see if code comes back on. Take your time, do it right, be safe, GOODLUCK

Hi Dave! Since you don't mention the specific vehicle, it's hard to say for sure. To give you the correct information I would need the year, make, model and engine size of the vehicle.

Answered on 8/3/2014 by Vincent from AAP

Q:

I have a 2003 buick century 3.1l that has coded out for 2 cylinders not firing. I pulled off the wires at the coil 1 at a time and found one of the coil tips totally rusted out (# 2 & # 5 cylinders). The other coils when I removed the wire changed the way the engine ran except for the one with the rusted tip. Is that sufficient enough to say that is the only bad coil on the car?

Hi Joe, techy question! Sorry, without the presence of your vehicle I would not be able to assist you in this regard. I would suggest that you to take your vehicle and get it thoroughly checked by a certified mechanic before buying any parts that may/may not solve the problem.

Testing procedures for an ignition coil: 1. Disconnect the output wire of the distributor ignition coil from the distributor cap with the ignition switch in the "off" position. 2. Connect a spark plug to the disconnected output wire of the ignition coil. 3. Attach a wire to the threads on the spark plug to serve as a ground wire. 4. Remove the ground wire of the distributor ignition coil. 5. Connect one end of the wire you removed to the negative terminal of the ignition coil. 6. Turn the ignition switch to the "on" position. 7. Touch the remaining end of ignition coil ground wire to the negative battery terminal or another grounding spot several times, tapping lightly. You should see sparks at the same frequency of the wire contacts. The primary coil should produce readings between 0.7 and 1.7 ohms. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

Answered on 8/30/2013 by Steve from AAP

Q:

I have a 1998 Lumina. For a number of years it has been at times been unable to crank up. Then after a bit you could crank it right up. Son says ignition. I think coil. Help guys.

kinda sound like a crankshaft position sensor.its cheap and fairly easy to fix.just do some investigating on the internet and you will find out where its at.hope this worked for you.

Answered on 9/17/2013 by db from orlando florida

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A:

Sorry, without the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest that you take your vehicle to a certified mechanic for further diagnosis. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

Answered on 8/11/2013 by Steve from AAP

Q:

i have a 1996 pontac grandam it is flashing the check engine light and runs rough could the it be cam coils or a bad value?

With reference to your inquiry on the BWD Ignition Coil - Part No. E51P, the bad ignition coil may cause the engine as very noisy and run rough idle on 1996 pontiac Grand Am. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

This BWD Ignition Coil -part# E51P is sold individually. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

With reference to your inquiry on the BWD Ignition Coil -part# E51P, isolate the negative battery cable. You need to disconnect the ground cable from the negative terminal of the battery. You should also set the emergency or parking brake as an additional safety feature. Locate the IDI/ICM pin and disconnect it from the harness connector. Separate the ignition coil and the ignition coil module assembly from the engine. Detach the housing cover retaining screws and remove the cover. Remove the ignition coil, the seal and the contacts from the cover. Replace the old seals with new seals and lubricate the connection with petroleum jelly. Insert the new ignition coil. Reassemble the engine components. Make sure you put the connections back in the proper place of the car. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

Answered on 2/28/2013 by Vincent from AAP

Q:

what is the acceptable secondary resistance value for these coil packs?

The secondary resistance range for this BWD Ignition Coil - (Part No. E51P) is 6.0 k - 11.0 k. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

Answered on 1/8/2013 by Aaron from AAP

Q:

What is the difference in the E51 and E51P coil pack and which one would I use for a 98 Pontiac GrandPrix GTP? Both of them say they are a exact fit for my car?

This BWD Ignition Coil (Part No. E51P) has HEI/DIS ignition coil terminals of steel or aluminum and it uses high efficiency laminations to optimize magnetic field build-up, to produce high spark energy. The BWD Select Ignition Coil (Part No. E51) use pure copper windings in both bobbins which creates a high temperature rating for improved durability and higher resistance to internal shorts and dielectric breakdown. The coil can run hotter without breaking down. For any further assistance, please visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you.

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